Sam Ronson lindsay lohan bike bicycle sunglasses jeans sneakers
Sam Ronson lindsay lohan bike bicycle sunglasses jeans sneakers

Samantha Ronson and a lady friend (NOT rumored girlfriend Erin Foster) enjoyed the day together in Los Angeles on Tuesday.

The pair drove around in a Porsche Panamera (the same Porsche Lindsay Lohan just bought for a cool $80,000) and headed to a sushi luncheon, then a bike shop.

At the store, they purchased a bicycle. Maybe Sam is worried she'll need it -- she faces DUI charges soon from her August arrest!

Although, Sam might be happy to stay home and watch TV. She Tweeted on Wednesday, "Hasn't Brandi been through enough already? #realhousewivesBH" Who knew Sam was a Real Housewives fan?!